No | Pattern | Freq | Relations |
---|---|---|---|
1 | [adj] [to-vb] [subord] [prep] | 202 | |
2 | [adj] [to-vb] [subord] [prep] | 174 | |
3 | difficult [to-vb] [conj] [prep] | 61 | |
4 | difficult [to-vb] [subord] [prep] | 44 | |
5 | difficult [to-vb] [subord] [prep] | 44 | |
6 | difficult [verb] [subord] [prep] | 44 |